(19)

(11)

EP 4 158 878 A1

(12)

(43) Date of publication: 05.04.2023 Bulletin 2023/14 (21) Application number: 21721798.3 (22) Date of filing: 13.04.2021

(51) International Patent Classification (IPC):  H04L 29/08(2006.01) H04L 29/06(2006.01) (52) Cooperative Patent Classification (CPC): H04L 67/12; H04L 69/22; H04L 69/16; H04L 69/324 (86) International application number: PCT/US2021/027034 (87) International publication number: WO 2021/242424 (02.12.2021 Gazette 2021/48)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 29.05.2020 US 202016887384 (71) Applicant: QUALCOMM INCORPORATED San Diego, California 92121-1714 (US)	(72) Inventors: ZHANG, Juan San Diego, California 92121-1714 (US) PAYYAPPILLY, Ajith Tom San Diego, California 92121-1714 (US) CHIN, Tom San Diego, California 92121-1714 (US) RONG, Huayan San Diego, California 92121-1714 (US) (74) Representative: Howe, Steven  Reddie & Grose LLP The White Chapel Building 10 Whitechapel High Street London E1 8QS London E1 8QS (GB)